<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区 -->
    <el-card>
      <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
      <div id="main" style="width: 750px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
  // 引入echarts
  import echarts from 'echarts'
  // 引入lodash工具库
  import _ from 'lodash'
  export default {
    data() {
      return {
        // 需要合并的数据
        options: {
          title: {
            text: '用户来源'
          },
          tooltip: {
            trigger: 'axis',
            axisPointer: {
              type: 'cross',
              label: {
                backgroundColor: '#E9EEF3'
              }
            }
          },
          grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
          },
          xAxis: [{
            boundaryGap: false
          }],
          yAxis: [{
            type: 'value'
          }]
        }
      }
    },
    created() {

    },
    methods: {

    },
    mounted() { //此时DOM已经渲染完毕
      // 基于准备好的dom，初始化echarts实例
      var myChart = echarts.init(document.getElementById('main'));
      this.$http.get('reports/type/1')
        .then(res => {
          if (res.data.meta.status != 200) return this.$message.error('获取数据失败！')
          // 准备数据、配置项
          // 合并数据
          let result = _.merge(res.data.data, this.options)
          myChart.setOption(result);
        })
        .catch(err => {
          this.$message.error('获取数据失败！' + err)
        })
    },
  }

</script>

<style scoped>

</style>
